OneCalendar

Get organised! Always have a clear overview of all your appointments everywhere you go.

Manage all your calendars on all your devices. Easily manage appointments, have a clear overview, setup meetings and recurrences and share appointments.

Download now for free

Available on Android 6 and higher.

Available on iPhone, iPad and Mac.

Available on Windows 10 & 11.

Features

Beautiful design

  • Clear overview
  • Multiple views
  • Personalized theming
  • Configurable widgets
  • Dark mode

Easy to use

  • Manage appointments
  • Invite people
  • Setup recurrences
  • Share appointments (e.g. using WhatsApp)
  • Work offline

Supports all calendars

  • Google calendar
  • Outlook
  • Office 365
  • Exchange
  • iCloud
  • CalDAV
  • Yahoo
  • GMX
  • Synology
  • Nextcloud
  • ownCloud
  • Mailbox.org
  • and many more...

What others think

With over 5 million downloads and an average rating of 4.5+ OneCalendar is the most popular calendar app available.

Don’t take our word for it, Here is what our fantastic customers think of it.

Jeffrey

The best calendar app I have found! Easy to set up and has no problem syncing up my Android, my iOS and my Windkws 10 phones and PC perfectly! I have been struggling with calendar synchronization problems for 3 months and this app installed on my phone and on my PC solved everything!

R. Jensen

This is an awesome calendar! Easy to use, fast to sync and organize! Love it!! Thank you for the great work! You save so much pain!

Dave T

Unbelievable that this is free. NO ads. Tried many apps before I found this one which syncs beautifully with iOS calendar . VERY customisable, great UI - especially the brilliant 'listview'. Well done and thanks